Question
At first, Barrel A and Barrel B contained 0.6 ℓ and 2.9 ℓ of water respectively. Some water from Barrel B was poured into Barrel A with no water spilling over. In the end, there was as much water in Barrel A as in Barrel B. How much water was poured from Barrel B to Barrel A?
3 m

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At first, Barrel A and Barrel B contained 0.6 ℓ and 2.9 ℓ of water respectively. Some water from Barrel B was poured into Barrel A with no water spilling over. In the end, there was as much water in Barrel A as in Barrel B. How much water was poured from Barrel B to Barrel A?